Malicious PDF — malware analysis report

Static analysis result for SHA-256 8358dc69cb471eaa…

MALICIOUS

PDF

42.4 KB Created: 2020-08-10 22:57:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7173af95da737e9d863d557065e5343 SHA-1: 825744e4fb542086d2f06d84db2da47c676db6ab SHA-256: 8358dc69cb471eaab2036d44ac14173d00243b1987487a3fa30f034377ded456
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. This redirector is likely used to funnel victims to a phishing site or download further malicious content. The presence of a large number of external PDF links, many pointing to Shopify, suggests a link farm designed to improve search engine ranking for malicious content, further supporting a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=jedzenie+po+angielsku+%25C4%2587wiczenia+dla+dzieci+pdf In PDF document text
    • http://files.divinelynourishing.com/uploads/1/3/2/7/132741023/643904.pdfIn PDF document text
    • http://files.viktorcage.shop/uploads/1/3/0/7/130738572/469e63f.pdfIn PDF document text
    • http://vileru.shantivillainstitute.com/uploads/1/3/0/8/130814328/tumobegibiz.pdfIn PDF document text
    • http://files.marthatorresfoodstylist.com/uploads/1/3/1/4/131438353/fidex-vexesojerizuxuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8333/3786/files/58201280924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4295/5676/files/96069976241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6191/1460/files/27093071465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8770/6774/files/lizumibivafumutomuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67264452348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3248/6823/files/namiwonironozal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5699/5233/files/handbrake_compress_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4315/1272/files/mokogegan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7405/9430/files/all_types_of_camera_shots.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7287/9782/files/biometrics_authentication.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1214/5830/files/20491247053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5018/9478/files/besumekisunelef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7301/9808/files/62584746751.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000616b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616B 5560 bytes
SHA-256: 207994c28c74329a46270f71d9bc2285c0dc69358428cd99c11c14836185d675
font_01_sfnt_off00007444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7444 12320 bytes
SHA-256: cf53fdee57d6505a93236bef994aa2c35bc9f0886f47281ff0d5c533a86d43e1

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